Improved belt-stretcher



PATENT OEETCE.

SEYMOUR ROGERS, OF PITTSBURG, PENNSYLVANIA.

IM PROVED BELT-STRETCH ER.

Specification forming part of Letters Patent No. 51,970, dated January9, 1866.

I To all whom it 'may concern.'

Be it known that I, SEYMOUR ROGERS, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Belt-Stretchers; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure lis a top or plan view of my improvedbelt-stretcher applied to a belt. Fi 2 is a vertical longitudinalsection ofthe same through the line m a', Fig. 1. Fig. 3 is a verticalcrosssection through the line y y, Fig. 2.

Similar letters of reference indicate like parts.

The object of my invent-ion is to furnish a belt-stretcher which may beapplied to belts of an y breadth, which may be applied and operated byone man, and by means of which the work may be done in one-quarter ofthe time required when the ordinary belt-stretchers are used; and itconsists of the combination of rollers, square shafts or cylinders,ratchetwheels and pawl, end pieces, and rope, as hereinafter more fullydescribed.

A is the pulley around which the belt B passes.

C D are eccentric rollers revolving in bea-rings in the end pieces, E Fand G H. The rollers G and D are enough shorter than the distancebetween plates E H and GF to allow the said rollers to be slipped so fartoward the plates or end pieces, G F, as to allow their axles to bewithdrawn from the plates E H. Then the plates E may be thrown back outof the way and this part of the stretcher removed from the belt; but inthe case of the other part ofthe stretcher the rollers C and I have bothto be withdrawn from the endl piece, H, before said end piece can bethrown back and the stretcher removed from the belt B. The surface ofthe sides of the eccentric rollers C and D farthest from the axis isgrooved or serrated to prevent its slipping upon the belt B.

Directly above the rollers C D are square shafts or cylinders J K,against the lower faces of which the belt is clamped by the eccentricrollers D (l. The square part of the shafts J K is of the same length asthe distance between the plates F E and G H, to which they are securelyattached.

Upon the axle of the roller I, projecting bevond the end piece, G, isattached a ratchetwheel, L, into the teeth of which catches the pawl M,pivoted to the projecting axle of the square shaft K; or it may bepivoted to the end piece, G,V if desired.

To ears formed on the end pieces, E F, is attached a band, rope, orchain', N, which is also attached to the roller I, around which it iswound when the belt is stretched. The rope Nmay be attached to theroller by passing through holes formed in said roller, or in any otherway.

The two parts ofthe stretcher should be applied to the belt at asufficient distance apart to allow the belt to be stretched or drawn upto the proper degree of tautness, when it may be fastened in any of theordinary ways and the stretcher removed from the belt, as beforedescribed. The rope or band N is Wound around the roller I and the beltstretched by means of a crank applied to the projecting end of theroller I.

Having thus described my invention, I claim asnew and desire to secureby Letters Pat-- ent- 1. The combination of the eccentric rollers C andD with the square shafts K and J, substantially as described, and forthe purpose set forth.

2. The combination of the roller I with the end pieces, G and H,ratchet-wheelL, and pawl M, substantially as described, and for thepurpose set forth.

3. The combination of the rope N, or its equivalent, with the endpieces, F and E, and roller I, substantially as described, and for thepurpose set forth.

The above specification of my invention signed by me.

SEYMOUR ROGERS. Witnesses:

JAMES M. TAYLOR, ABRAM W. WALL.

